iOS 12 beta 7 limited internet access

I have an iPad Pro 10.5 (Wifi only). I just upgraded to beta 7 and now I can no longer access any of Apple's sites that require authentication. For example My Apple Account. Further I an no longer access the following Apps which require my Apple ID to be authorized: App Store, iMessages, iTunes, iCloud, etc... I can use Safari to a limited extent. Some websites work while others do not.

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Rebooted the router and now all is working. My iPad Pro 10.5 is now running iOS 12 beta 7.

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Ok I just noticed that beta 7 has been rolled back from the download site. Does anyone know if I can restore back to iOS 12 beta 6 on my iPad?

More info as I'm working the problem. If I connect through my home internet (Rogers) I can not access Apple servers. When I connect through my Cell Phone's Personal HotSpot I can access everything from my iPad. Ideas?

Rebooted the router and now all is working. My iPad Pro 10.5 is now running iOS 12 beta 7.